I used to run a propane powered FJ-55. Is it dual fuel or propane only? Only difference to a gas engine is the vaporizer/pressure regulator. Works well, runs very clean, 50,000 miles on an oil change and the oil will still look clean. Very high octane-equivalent, so it works great in high compression engines.Originally posted by Pizzacutter:
<STRONG>I was at the wrecking yard the other day and saw what appeared to be a complete propane powered. Dose any body know anything about these?</STRONG>
MPG is about 60% of gas, less BTUs per gallon (I used to get 10 MPG with my FJ, stock F engine highway or city was the same). Power can be less or more, depends on how the engine is set up. Ideally 11-12:1 compression, and other tweaks from gasoline operation (at least if running propane only). Bulky tanks, I had a 1 single and one dual tank in my FJ, 50 gallons total, about 500 mile range. Sometimes hard to find propane "motor fuel" (not bottle gas). Often you can buy bottle gas (technically not legal) for motor vehicle use, but you'll pay for it. Motor fuel has road taxes added and is usually fairly inexpensive. If you go cross-country with propane, invest in a propane station directory, you'll need it.Originally posted by Cobb:
<STRONG>so what's the down side, i mean...there's got to be something or you'd see a lot more of them on the trail. so...spill the beans.</STRONG>
The 1/2" hose is the vapor feed pipe. Conversion parts and install generally runs $1500 plus tanks.Originally posted by Pizzacutter:
<STRONG>as fro dual fuel i am not sure didn't look that close, saw a kind of capped manifold, with a like half inch hose running to it, I was looking for the holy grail ( ac bracket that mounts low on pass side of the block, fund one <IMG SRC="smilies/tongue.gif" border="0"> )So i was kind of in a hurry. is it worth anything?</STRONG>
how hard is it to Dual-fuel something? can you just pipe it into the air cleaner and shut off the fuel supply to the carb somehow or is it something you'd need a kit for? Reason I ask is I've thought about this before, the propane would still run almost upside down. The carb sucks a$$ when the vehicle is at any kind of an angle. You could switch back to gas on the road and not have to worry about finding propane out in the boonies.. Its been dual fuel since about 1980 or so.
Where is usually just an adapter plate added to the carb for the LPG injection. You end up with a switch to change between fuels and can run on either. I had it added to the Holley carb on my Landcruiser. It sure ran nice, that old F motor used to stumble and took 10 minutes to warm up before you could think about getting on the freeway. With LPG, it was smooth from the start, you could set the idle down to near zero it was so smooth.Originally posted by scottz:
<STRONG>how hard is it to Dual-fuel something? can you just pipe it into the air cleaner and shut off the fuel supply to the carb somehow or is it something you'd need a kit for? Reason I ask is I've thought about this before, the propane would still run almost upside down. The carb sucks a$$ when the vehicle is at any kind of an angle. You could switch back to gas on the road and not have to worry about finding propane out in the boonies.</STRONG>. Its been dual fuel since about 1980 or so.
That would help, but I found my old F engine in my FJ55 was a lot peppier on propane than on gas. Low end torque was a lot better, I found no loss of power, in fact it may have been better. The F engine runs in the 7:1 compression ratio range. Upping the compression certainly would help and yes the tanks are bulky.Originally posted by Domenic:
<STRONG>That 22R will be a real Dog unless you raise
the compression ratio, and you will need a
tank that take up your whole bed to drive
very far. But it would be great on inclines.
A 22RE might be a better choice.just my 2c. <IMG SRC="smilies/usa.gif" border="0"></STRONG>